@charset "utf-8";
html,body{
    width: 100%;
    height: 100%;
}
*{
    padding: 0;
    margin: 0;
}
body{
    display: flex;
    flex-direction: column;

}
header{
   width: 100%;
   line-height: 44px; 
   text-align: center;
   font-size: 14px;

}
.main{
    display: flex;
    flex-direction: column;
    flex: 1;
    /* justify-content: center; */
    align-items: center;
    height: 600px;
    width: 100%;
    color: #fff !important;
    background: url(../img/advertisement-bg.jpg);
    background-repeat: no-repeat;
    background-size:cover;
    background-position: top center;
    position: relative;
}
.content{
    width: 76px;
    height: 30px;
    border-radius: 15px;
    background-color: #fff;
    position: absolute;
    top: 20px;
    right: 20px;
    color: #101010;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
    font-size: 12px;
}
.footer{
    font-size: 30px;
    position: absolute;
    top: 75%;
}
@keyframes com{
    0%{
        top: 50%;
        opacity: 0;
        font-size: 10px;
    }
    80%{
        top: 65%;
        opacity: 0.8;
        font-size: 20px;
    }
    100%{
        top: 75%;
        opacity: 1;
        font-size: 30px;
    }
}